Preheat oven to 450. Steam the sweet potato slices and broccoli for five minutes. Meanwhile, blend the tomatoes, spinach, herbs, garlic, parmesan, and salt, a blender makes a smoother sauce, but you can hand-mix if you prefer. Spread the sauce atop the pizza crust. Layer on the steamed sweet potato, then tofu, half the soy cheese, broccoli, pepper, onion, and finally the rest of the cheese. Bake for 8-10 minutes.
Delicious!